更换钢轨时铜导线两端用夹具牢固夹持在相邻的()上。 A.轨腰 B.轨头 C.轨底 D

题型:单项选择题

问题:

更换钢轨时铜导线两端用夹具牢固夹持在相邻的()上。

A.轨腰

B.轨头

C.轨底

D.轨头下颚

考点:高铁岗位考试高铁线路工高铁线路工题库
题型:单项选择题

读“非洲气候类型”图,完成下列问题:

(1)写出图中字母代表的气候类型:A_________B________D_________G_________

(2)刚果盆地处于________气候区。

(3)非洲气候类型的分布规律是_______________________。

(4)非洲为什么被称为“热带大陆”?

______________________________________________________________

题型:单项选择题

在设计阶段,当双击窗体上的某个控件时,所打开的窗口是

A.工程资源管理器窗口

B.工具箱窗口

C.代码窗口

D.属性窗口

题型:单项选择题

下列说法中正确的是[ ]

A.导体中的电荷只要移动就一定形成电流

B.绝缘体不导电,是因为绝缘体中几乎没有电子

C.绝缘体不能导电,所以导体是重要的电工原料,绝缘体不是

D.金属能够导电,是因为金属内部有大量的自由电子

题型:单项选择题

Phyllis Wheatley is regarded as America’’s first black poet. She was born in Senegal, Africa, about 1753 and brought to America aboard a slave ship at about the age of seven. John and Susannah Wheatley bought her for three pounds at a slave auction in Boston in 1761 to be a personal servant of Mrs. Wheatley. The family had three other slaves, and all were treated with respect. Phyllis was soon accepted as one of the family, which included being raised and educated with the Wheatley’’s twin 15-year-old children, Mary and Nathaniel. At that time, most females, even from better families, could not read and write, but Mary was probably one of the best educated young women in Boston. Mary wanted to become a teacher, and in fact, it was Mary who decided to take charge of Phyllis’’s education. Phyllis soon displayed her remarkable talents. At the age of twelve she was reading the Greek and Latin classics and passages from the Bible. And eventually, Mrs. Wheatley decided Phyllis should become a Christian.At the age of thirteen Phyllis wrote her first poem. She became a Boston sensation after she wrote a poem on the death of the evangelical preacher George Whitfield in 1770. It became common practice in Boston to have "Mrs. Wheatley’’s Phyllis" read poetry in polite society. Mary married in 1771, and Phyllis later moved to the country because of poor health, as a teacher and caretaker to a farmer’’s three children. Mary had tried to interest publishers in Phyllis’’s poems but once they heard she was a Negro they weren’’t interested.Then in 1773 Phyllis went with Nathaniel, who was now a businessman, to London. It was thought that a sea voyage might improve her health. Thirty-nine of her poems were published in London as Poems on Various Subjects, Religious and Moral. It was the first book published by a black American. In 1775 Phyllis wrote a poem extolling the accomplishments of George Washington and sent it to him. He responded by praising her talents and inviting her to visit his headquarters. After both of her benefactors died in 1777, and Mary died in 1778, Phyllis was freed as a slave. She married in 1778, moved away from Boston, and had three children. But after the unhappy marriage, she moved back to Boston, and died in poverty at the age of thirty.

It can be inferred that Phyllis’s trip to England with Nathaniel in 1773________.

A.did not improve her health

B.was for business reasons

C.led to books of her poems being available in America

D.led to the publication of her poems because the English were more interested in religious and moral subjects

题型:单项选择题

依据班杜拉的理论,榜样学习可分为()。

A.现实榜样学习

B.理想榜样学习

C.符号榜样学习

D.文字榜样学习

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